consists of local newscasts, programmes acquired from the syndication market, and brokered programming (including infomercials, more often in off-peak hours). Similarities may still exist in the scheduling of syndicated programmes between markets, based on factors such as "recommended" timeslots suggested by a programme's distributor, and broadcasters acquiring a particular programme for all of their stations in a group deal. Due to differing market dynamics, Spanish-language networks such as Telemundo and Univision, as well as specialty networks designed to be carried on digital subchannels, have a centralised network schedule with opt-out periods for local programs and other regulatory obligations not fulfilled by national programming. Affiliates may, from time to time, opt out of network programs to air special programming of local interest (such as coverage of sports or local celebrations); affiliation contracts typically contain restrictions on how often this can be done, and may require the displaced programming to be preempted to either a sister station, digital subchannel, or different timeslot (such as during the late-night hours or on a different night) as compensation. In the past, Westinghouse Broadcasting was known for pre-empting network programming on its stations for its own in-house programming; when reaching a major affiliation deal with CBS in 1994 (as part of a larger re-alignment of broadcast television triggered by Fox's acquisition of New World Communications), the company agreed to cease this practice and carry all CBS network programming in-pattern with no preemptions (Westinghouse would later acquire CBS outright). In certain highly-publicised cases, affiliates have opted out of network programmes (either individual episodes, or entire series) based on objections to their content by station management, such as due to the owner's religious values, and political reasons. A more straightforward equivalent to a regional variation in North American broadcasting is a semi-satellite—a co-owned rebroadcaster of a television station that is used to extend its range into a different portion of a market (typically if the main signal is not strong enough to reach it), or a different one entirely, but has more variation in programming than a straight rebroadcaster. Semi-satellites typically share the majority of their programming with a parent station (which may vary to account for syndication rights), but carry a different on-air brand, and local advertising specific to the region. Some semi-satellites have dedicated news bureaus, and may opt out from the parent's station's newscasts to carry either local news segments, or dedicated local newscasts in